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In this paper we present the relative work function measurements of Platinum (Pt), Molybdenum (Mo), Lead (Pb), and Graphite (C) by using Kelvin Probe. The obtained results have shown that the work function measurements made in air are affected by the adsorption of oxygen. To measure the “true” metal work function the oxide layer has to be removed. Moreover in the experiments...
The modification of sodium trititanate whisker surface was performed by means of impregnation procedure to fabricate the modified sodium trititanate whisker, which was characterized by scanning electron microscopy(SEM) and infrared spectroscopy(IR). Its adsorptive performance for Co(II), Pb(II) in a static system was investigated by inductively coupled plasma atomic emission spectrometry(ICP-AES)...
A new adsorbent was developed from municipal sewage sludge (SS) combined with 5-20% pyrolusite of the weight of SS carbon, and using ZnCl2 as chemical activation reagent. Characterized by N2-BET methods and SEM, the result showed that the surface area of the new adsorbent was increased to 354.198 m2/g compared with that of the unmi- xed sludge activated carbon 232.526 m2/g and total pore and micropore...
Tobermorite is a mineral material with good ion exchange properties. The potassium feldspar ore from Lushi country is muscovite syenite. Potassium feldspar was hydrothermally decomposed with CaO as an additive, and then tobermorite nano-scale powder was synthesized. Based on the research work of our group, the adsorption property of tobermorite to Pb2+ from aqueous solution was studied. The factors...
The dithizone modified sodium trititanate whisker as a solid sorbent was prepared by using impregnation method. The adsorption properties of the sorbent to Cd(II) in static system, main factors of affecting adsorption and desorption, adsorption capacity and influence of coexisting ions on the determination of Cd(II) were investigated by flame atomic adsorption spectrometry (FAAS). The selection experiment...
Capacitive humidity sensors were fabricated using countersunk interdigitated electrodes coated with amorphous nanostructured TiO2, SiO2, and Al2O3 thin films grown by glancing angle deposition. The capacitive response and response times for each sensor were measured. The sensor utilizing TiO2 exhibited the largest change in capacitance, increasing exponentially from ~ 1 nF to ~ 1muF for an increase...
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